Evaluation of stress intensity factor in FGM

0331838 - ÚFM 2010 RIV CZ eng A - Abstract
Ševčík, Martin - Hutař, Pavel - Náhlík, Luboš - Knésl, Zdeněk
Evaluation of stress intensity factor in FGM.
[Určení součinitele intenzity napětí u FGM.]
Computational mechanics 2009. Plzeň: University of West Bohemia, 2009 - (Adámek, V.; Zajíček, M.). s. 1-2. ISBN 978-80-7043-824-4.
[Computational mechanics 2009. 09.11.2009-11.11.2009, Hrad Nečtiny]
R&D Projects: GA ČR GD106/09/H035; GA ČR GC101/09/J027
Institutional research plan: CEZ:AV0Z20410507
Keywords : functionally graded material * linear elastic fracture mechanics * discretization methodology * power-law material change
Subject RIV: JL - Materials Fatigue, Friction Mechanics

This work is focused on a numerical estimation of the stress intensity factor for cracks propa-gating through FGM structure. The philosophy of the FE model creation is focused on the discretization of material properties. The analysis of the FGM layer bonded from both sides with different homogenous materials has been performed to study the influence of the shape of the material property change. The thickness effect of the FGM layer is also discussed. All analyses are simulated as a 2D problem of an edge crack specimen. In this paper, the above effects are quantified, and conclusions concerning the applicability of the proposed model are discussed.

Práce se zabývá studiem lomově mechanických parametrů ve funkčně gradientní vrstvě. Je zde navržen postup nerovnoměrné diskretizace mechanických vlastností materiálu za účelem zvýšení efektivnosti řešení.
Permanent Link: http://hdl.handle.net/11104/0177248